通过一维水平砂柱试验，结合多孔介质传质理论，从孔隙尺度探索含水层中微纳米颗粒形貌特征与其释放、运移、沉积过程的内在关联，揭示颗粒重组的力学诱导机制。研究结果表明，在渗流溶液水动力作用与物化性质相同，并且含水介质机械组成相近的条件下，球形硅微粉释放率最高，试验过程中累计释放颗粒质量达93.74 mg；咸水层原砂释放率最低，仅为0.62%。依据试验结果，利用双沉积位动力学模型进行反演，计算得到咸水层原砂在受运移距离控制点位沉积系数最大，高于人工制备砂样2个量级。结合电镜扫描与颗粒表面ζ电位测试结果，基于颗粒受力平衡分析，渗流剪切应力与颗粒法向截面面积成正比；同时伴随微纳米颗粒形貌、构成的变化，扩散双电层排斥力存在显著差异。因此，球状硅微粉颗粒通常以单体形式脱离多孔介质表面；片状次生黏土矿物颗粒多以大体积粒团形式释放，出现再次沉积或被孔喉捕获的机率提高。

According to the particularity of porous structure and mineral composition in coastal energy storage shallow brackish aquifers, a controllable experiment of one-dimensional (1D) sand column infiltration was conducted. By combining with the mass transfer theory in porous media, this study probed into the internal connection at the porous scale that gave rise to the aquifer medium micro-nano particles detachment, transportation and attachment resulting from the particle morphology characteristics, and then explicated the induced mechanism of particles redistribution. The results indicate that, compared with another type of particle, the release rate of the spherical silica powder is the highest, and the accumulative weight of this particle in effluent liquid is up to 93.74 mg. However, the release rate of the brackish aquifer sand is the lowest, merely 0.62% when the hydrodynamics and physical-chemical properties of seepage solution is the same. Morover, the mechanical composition and porous structure of aquifer medium is also similar. After that, based on experimental results, the inversion of the adopted particle transport model with two kinetic retention sites is introduced. The results show that the brackish aquifer sand of the first-order attachment coefficient on the second kinetic site which is assumed to be irreversible and depth-dependent is 2 orders of magnitude higher than another two groups of the artificial aqueous medium column. Combined with experimental results from the SEM and the Zeta potential of particles, it is found that the seepage shear stress is directly proportional to the normal cross-sectional areas of particle. The diffuse electric double layer repulsion is obvious different from the change of particles morphology and mineral composition, which are based on the analysis of forces and force torque balance for the particles located on the internal grain surface of the aquifer medium. Therefore, the spherical silica powders usually detach in the form of monomer type from the grain surface of the porous media. However, regarding flake secondary clay mineral particles, the regular release type is a large size particle group which could enhance the probability of the attachment in matrix surface or the captured by the pore throat.